Leaving a W-2 executive role usually means leaving employer-sponsored coverage, and buying your own plan is one of the biggest new line items in a fractional career. The good news is that the premiums are deductible. The catch is that the deduction lives in a different place than most people expect, and it has a hard ceiling.
The self-employed health insurance deduction lives on Schedule 1
Premiums you pay for medical, dental, and qualifying long-term care coverage for yourself, your spouse, and your dependents are deductible as the self-employed health insurance deduction. It is claimed on Schedule 1 of Form 1040 as an above-the-line adjustment to income, not as a business expense on Schedule C. That distinction has a real consequence: the deduction reduces your income tax, but because it never touches Schedule C, it does not reduce the net profit that your 15.3% self-employment tax is calculated on. Plenty of new fractional executives park premiums on Schedule C by mistake, which overstates the benefit and invites cleanup later.
Above-the-line still matters. You get the deduction whether or not you itemize, and it lowers your adjusted gross income, which can help with other AGI-linked breaks.
The net profit ceiling on your premiums
The deduction cannot exceed the net self-employment profit from the business under which the insurance is established. If your fractional practice nets a strong profit across your retainers, all of your premiums typically fit. But in a lean startup year, if premiums run higher than your net profit, the deduction is capped at that profit, and the excess does not carry forward as an adjustment. Excess premiums can potentially count as itemized medical expenses on Schedule A instead, though the AGI floor there means most people get little from that route. If you have elected S corp status, the mechanics change: the company pays or reimburses the premiums, includes them in box 1 of your W-2, and you then claim the deduction on your personal return.
The months that do not qualify
There is one disqualifier that catches fractional executives with employed spouses: you cannot take the deduction for any month in which you were eligible to participate in an employer-subsidized health plan, including a plan offered through your spouse's job. Eligibility alone is enough, even if you declined the coverage. The test applies month by month, so a mid-year change, say your spouse leaves their job in July, can make the second half of the year deductible while the first half is not.
Medicare premiums, for fractional executives working past 65, generally do qualify for the deduction. Keep the premium statements with your tax records, note any months of employer-plan eligibility in your household, and give your tax preparer the month-by-month picture rather than just the annual total.